
FH (Guangdong Fenghua Advanced Tech)
Parametric alternative with 162kΩ resistance. Package, power, and tolerance match.
Finding a substitute for the RS-03K1803FT, a 180kΩ 1% 0.1W 0603 resistor, involves checking for alternatives with similar properties. Several parametric alternatives exist with slight variations in resistance that require engineering review.
Resistance value differs, requiring circuit analysis to ensure performance is not affected.
All candidates use the same 0603 package, ensuring physical compatibility.
No direct drop-in replacement with the exact 180kΩ resistance was found. The closest options are parametric alternatives requiring engineering review.
Use a parametric alternative like FRC0603F1823TS (182kΩ), which is the closest in value, after verifying circuit tolerance.
The primary risk is the deviation in nominal resistance, which could impact circuit timing, biasing, or feedback loops.

FH (Guangdong Fenghua Advanced Tech)
Parametric alternative with 162kΩ resistance. Package, power, and tolerance match.
| Feature / factor | RS-03K1803FT | RS-03K1623FT | FRC0603F1743TS | FRC0603F1823TS | Compatibility / risk |
|---|---|---|---|---|---|
| Resistance | 180kΩ | 162kΩ | 174kΩ | 182kΩ | 162kΩ / 174kΩ / 182kΩ / 196kΩ — Candidate resistance is 10% lower. Verify circuit tolerance.; FRC0603F1743TS: Candidate resistance is 3.3% lower. Verify circuit tolerance.; FRC0603F1823TS: Candidate resistance is 1.1% higher. Verify circuit tolerance.; FRC0603F1963TS: Candidate resistance is 8.9% higher. Verify circuit tolerance. |
| Package | 0603 | 0603 | 0603 | 0603 | 0603 — matched; FRC0603F1743TS: matched; FRC0603F1823TS: Package size matches.; FRC0603F1963TS: matched |
| Power | 0.1W | 0.1W | 0.1W | 0.1W | 0.1W — matched; FRC0603F1743TS: matched; FRC0603F1823TS: matched; FRC0603F1963TS: matched |
| Tolerance | ±1% | ±1% | ±1% | ±1% | ±1% — matched; FRC0603F1743TS: matched; FRC0603F1823TS: matched; FRC0603F1963TS: matched |
| Tcr | ±100ppm/℃ | - | - | ±100 ppm/°C | ±100 ppm/°C — matched |
The best alternative is FRC0603F1823TS from FOJAN. It has the closest resistance value (182kΩ vs 180kΩ) and matches the package, power, and tolerance. However, you must verify if the +1.1% resistance difference is acceptable for your application.